Despite me getting on a crammed bus every morning and afternoon to go working in the same room as about 80 other people 4 days a week I didn't get COVID (that I know of) until now.

Sometimes we are just lucky. Maybe the vaccine worked better-than-average for us. Maybe the route of infection works less well for us. Maybe we had it without noticing it at all

But it's also easy to test multiple times, and often enough the symptoms will confirm it.

I did not mean to confirm the parent, but give a version that is similar but probably just chance.

You don't.

You probably haven't been exposed at all, or you're one of the lucky asymptomatic people.

For example, I live in a major city, and am constantly around people post-vaccine. Yet I've had Covid 3x since them.

You can't draw the conclusion you're making from your behavior in public, as there's so many other likely possibilities.

Whether asymptomatic or not infected at all seems like a distinction without a difference. Either way I didn’t miss work, vacations, or get noticeably harmed. The whole point of my strategy was to expose my immune system to germs it was well equipped to fight off quickly and expose it continuously so I didn’t encounter it after it had mutated too much to be recognized.

I’m well aware of the pitfalls of anecdata, I just thought my approach was different enough from what most people did to be worth sharing. There will be no studies to test my strategy, so all we can have is my anecdotes.